linux-kernel - Re: [PATCH 5/6] dt-bindings: Add ANX6345 DP/eDP transmitter binding

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Message-ID: <20190523123041.GB15685@lst.de>
Date:   Thu, 23 May 2019 14:30:41 +0200
From:   Torsten Duwe <duwe@....de>
To:     Maxime Ripard <maxime.ripard@...tlin.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Icenowy Zheng <icenowy@...c.io>,
        Sean Paul <seanpaul@...omium.org>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Harald Geyer <harald@...ib.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] dt-bindings: Add ANX6345 DP/eDP transmitter binding

On Thu, May 23, 2019 at 11:05:40AM +0200, Maxime Ripard wrote:
> > +Optional properties:
> > +
> > + - Video ports for RGB input and eDP output using the DT bindings
> > +   defined in [1]
> 
> The output node can be optional, but the input one is probably going
> to be needed all the time, since otherwise you won't be able to fill
> the output port of the upstream device in the graph.

I guess so. A sibling product brief (anx9804)
https://www.analogix.com/en/ttlconvertersbridges
references it as
| LVTTL to DisplayPort 1.2 _transmitter_
so it will probably always be used on the output side.

	Torsten